Reducing aggregation caused quenching effect through co-assembly of PAH chromophores and molecular barriers

Abstract The features of well-conjugated and planar aromatic structures make π-conjugated luminescent materials suffer from aggregation caused quenching (ACQ) effect when used in solid or aggregated states, which greatly impedes their applications in optoelectronic devices and biological applications. Herein, we reduce the ACQ effect by demonstrating a facile and low cost method to co-assemble polycyclic aromatic hydrocarbon (PAH) chromophores and octafluoronaphthalene together. Significantly, the solid photoluminescence quantum yield (PLQYs) for the as-resulted four micro/nanococrystals are enhanced by 254%, 235%, 474 and 582%, respectively. Protection from hydrophilic polymer chains (P123 (PEO 20 -PPO 70…

• EC
  European Commission

  Awards: 2017-T2, 791207
• NN
  National Natural Science Foundation of China

  Awards: 21602093, BL14B1, 2017YFA0204903, 21673106, 51525303, 1522203, 51733004, 221702085, 21572086
• MO
  Ministry of Education, India
• HE
  Higher Education Discipline Innovation Project

  Awards: 2017YFA0204903, 51733004, 21602093
• FR
  Fundamental Research Funds for the Central Universities

  Awards: 21602093, lzujbky-2017-109, 51733004, 2017YFA0204903, lzujbky-2017-11